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Finding the Fourth Proportional to 17,171.80, 25,725.30 and 16,005.40

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Solution

The fourth proportional to 17,171.80, 25,725.30 and 16,005.40 is: 23,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,171.80 : 25,725.30 = 16,005.40 : x
  2. Step 2: Convert to fraction form
    17,171.80/25,725.30 = 16,005.40/x
  3. Step 3: Cross multiply
    17,171.80x = 25,725.30 × 16,005.40
  4. Step 4: Simplify right side
    17,171.80x = 411,743,716.62
  5. Step 5: Solve for x
    x = 411,743,716.62/17,171.80
  6. Step 6: Final answer
    x = 23,977.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.